Configured for pulse signal acquisition in distributed control systems, the YOKOGAWA AAP149-S00 (AAP149) Pulse Input Module provides direct physical and electrical execution for CENTUM VP and CS 3000 platform architectures.

Hardware Specifications

Channel Isolation and DCS Bus Architecture

The module utilizes high-speed transistor contact sensing circuits optimized for open collector input devices, processing trailing-edge pulse transitions across 16 non-isolated channels. Signal conditioning stages update pulse count registers every 2 ms, converting raw frequency inputs into digital data streams for central process monitoring. Internal logic blocks manage backplane bus communication to ensure deterministic data transfer to system controllers without timing drift.

Frequently Asked Questions

Q: What is the maximum input frequency supported by the AAP149-S00 module?

A: The module processes pulse input frequencies ranging from 0 up to 6 kHz across its active input channels.

Q: What is the data update period for pulse count processing?

A: The internal register data update period is executed every 2 ms to deliver real-time process monitoring values.

Field Installation Guidelines

Mount the AAP149-S00 module securely onto designated Yokogawa node unit slots, ensuring proper mechanical alignment and backplane connector engagement. Terminate field pulse-generating device wiring to the corresponding terminal blocks using shielded cables, routing signal lines away from high-voltage power conduits. Verify backplane power supply voltage limits prior to system energization.